James E. Smith (Ph.D. in sociology with a specialization in demography, University of Southern California) is currently vice president of a national research corporation near Washington, D.C., and a senior research associate in the Unit on Ageing, Cambridge Group for the History of Population and Social Structure, Cambridge University. He has been associated with the Family and Demographic Research Institute at Brigham Young University; the University of Southern California Population Research Laboratory; the Institut National des Etudes Demographiques in Paris, France; and the Population Research Institute, Beijing University, China.